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    <title>作业二</title>
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<script>
    var a = ['6203\6204-ZRS*', 'UNK”skf 5', '602|6203|6205%#-56'];
    var b = ['6206\6206-ZRS*', 'UNK”skf 5', '602|6203|6205%#-56'];

    let new_a = a.filter(function (item) {
        return b.every(function (item1) {
            return item != item1;
        })
    });
    console.log("new_a",new_a);


    var a1 = JSON.stringify(new_a);
    console.log(a1);







                

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